#pragma once

#include <iostream>
#include <string>
#include <sstream>
#include <memory>
#include <jsoncpp/json/json.h>

const std::string Sep = "\r\n";


//添加报头
//{json} -> len\r\n{json}\r\n
bool Encode(std::string& message)
{
    if(message.size() == 0)
    {
        return false;
    }
    std::string package = std::to_string(message.size()) + Sep + message + Sep;
    message = package;
    return true;
}

//删除报头
//len\r\n{json}\r\n -> {json}
bool Decode(std::string &package,std::string* content)
{
    auto pos = package.find(Sep);
    if(pos == std::string::npos)
    {
        return false;
    }
    std::string content_length_str = package.substr(0,pos);
    int content_length = std::stoi(content_length_str);
    int full_length = content_length_str.size() + content_length + 2 * Sep.size();
    
    if(package.size() < full_length)
    {
        return false;
    }
    *content = package.substr(pos + Sep.size(),content_length);

    //package erase
    package.erase(0,full_length);
    return true;
}


// _x _oper _y
class Request
{
public:
    Request():_x(0),_y(0),_oper('-')
    {

    }
    Request(int x,int y,char oper):_x(x),_y(y),_oper(oper)
    {

    }
    ~Request()
    {

    }
    bool Serialize(std::string& out_string)
    {
        Json::Value root;
        root["x"] = _x;
        root["y"] = _y;
        root["oper"] = _oper;

        Json::StreamWriterBuilder wb;
        std::unique_ptr<Json::StreamWriter> w(wb.newStreamWriter());
        std::stringstream ss;

        w->write(root,&ss);
        out_string = ss.str();
        return true;
    }
    bool Deserialize(std::string& in_string)
    {
        Json::Value root;
        Json::Reader reader;
        bool parsingSuccessful = reader.parse(in_string,root);
        if(!parsingSuccessful)
        {
            std::cout << "Failed to parse JSON: " << reader.getFormattedErrorMessages() << std::endl;
            return false;
        }
        _x = root["x"].asInt();
        _y = root["y"].asInt();
        _oper = root["oper"].asInt();

        return true;
    }
    void Print()
    {
        std::cout << _x << std::endl;
        std::cout << _oper << std::endl;
        std::cout << _y << std::endl;
    }
    int X() const
    {
        return _x;
    }
    int Y() const
    {
        return _y;
    }
    char Oper() const
    {
        return _oper;
    }
private:
    int _x;
    int _y;
    char _oper;
};

class Response
{
public:
    Response():_result(0),_code(-1)
    {

    }
    Response(int result,int code):_result(result),_code(code)
    {

    }
    ~Response()
    {

    }
    bool Serialize(std::string& out_string)
    {
        Json::Value root;
        root["result"] = _result;
        root["code"] = _code;

        Json::StreamWriterBuilder wb;
        std::unique_ptr<Json::StreamWriter> w(wb.newStreamWriter());
        std::stringstream ss;

        w->write(root,&ss);
        out_string = ss.str();
        return true;
    }
    bool Deserialize(std::string& in_string)
    {
        Json::Value root;
        Json::Reader reader;
        bool parsingSuccessful = reader.parse(in_string,root);
        if(!parsingSuccessful)
        {
            std::cout << "Failed to parse JSON: " << reader.getFormattedErrorMessages() << std::endl;
            return false;
        }
        _result = root["result"].asInt();
        _code = root["code"].asInt();

        return true;
    }
    int Result()const
    {
        return _result;
    }
    int Code()const
    {
        return _code;
    }
    void SetResult(int res)
    {
        _result = res;
    }
    void SetCode(int c)
    {
        _code = c;
    }
private:
    int _result; //结果
    int _code;   //出错码,0,1,2,3,4
};
